Question

10. During a storm, sand is eroded from a beach at a rate of 2 m³ per hour. What

equation can be used to represent the volume of sand in cubic meters, c, on the
beach? Let b represent the amount of sand in cubic meters at the beginning of the
storm and h represent time in hours. Complete the equation using +, -, x, or +.
c=b
2h

Answer 1

c=b-2h

"c" represents the volume of sand in cubic meters on the beach at any given time during the storm.
"b" represents the amount of sand in cubic meters at the beginning of the storm.
"h" represents the time in hours that has passed since the beginning of the storm.
"2h" represents the rate of erosion, where 2 cubic meters of sand are eroded per hour. Subtracting this erosion rate from the initial amount of sand gives the volume of sand remaining on the beach at any given time during the storm.